package com.zhang.hadoop.netty.netty.websocket;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDateTime;
import java.util.Locale;

/**
 * @author: zhang yufei
 * @createTime:2022/2/26 18:01
 * @description:
 */
public class MyTestWebSocketFrameHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {

    @Override
    protected void channelRead0(ChannelHandlerContext channelHandlerContext, TextWebSocketFrame textWebSocketFrame) throws Exception {
        System.out.println("服务器收到消息:" + textWebSocketFrame.text());
        //回复消息
        channelHandlerContext.channel().writeAndFlush(new TextWebSocketFrame("服务器时间:" + LocalDateTime.now()) + textWebSocketFrame.text());
    }

    //当web客户端链接后,触发方法
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        //id表示唯一的值,LongText是唯一的ShortText不是唯一
        System.out.println("handlerAdded被调用" + ctx.channel().id().asLongText());
        System.out.println("handlerAdder被调用" + ctx.channel().id().asShortText());
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerRemoved被调用" + ctx.channel().id().asLongText());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("异常发生:" + cause.getMessage());
        ctx.close();
    }
}
